Bernd Papenfuhs

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Patents Grantslast 30 patents

Information Patent Grant
Process for purifying tertiary fatty alkylmethylamines
- Patent number 5,902,903
- Issue date May 11, 1999
- Hoechst Aktiengesellschaft
- Bernd Papenfuhs
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polygdroxyalkylamidobetaines
- Patent number 5,869,710
- Issue date Feb 9, 1999
- Hoechst Aktiengesellschaft
- Bernd Papenfuhs
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Polyhydroxyalkyl-amidoamine oxides
- Patent number 5,760,258
- Issue date Jun 2, 1998
- Hoechst Aktiengesellschaft
- Bernd Papenfuhs
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Concentrated solutions of polyhydroxyalkylamines and their use
- Patent number 5,744,644
- Issue date Apr 28, 1998
- Hoechst Aktiengesellschaft
- Bernd Papenfuhs
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing solutions of polyhydroxy-fatty acid amides ha...
- Patent number 5,571,934
- Issue date Nov 5, 1996
- Hoechst AG
- Bernd Papenfuhs
- C07 - ORGANIC CHEMISTRY